How to remove last line of the file


 
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Top Forums Shell Programming and Scripting How to remove last line of the file
# 8  
Old 10-20-2011
simple way if u r new to unix is -
1. find out total number of lines in the file

Code:
 
$wc -l filename

2. if 'n' is the total number of lines you got, move n-1 lines to another file/same file

Code:
 
$head -<n-1> filename > filename

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remove(3C)						   Standard C Library Functions 						remove(3C)

NAME
remove - remove file SYNOPSIS
#include <stdio.h> int remove(const char *path); DESCRIPTION
The remove() function causes the file or empty directory whose name is the string pointed to by path to be no longer accessible by that name. A subsequent attempt to open that file using that name will fail, unless the file is created anew. For files, remove() is identical to unlink(). For directories, remove() is identical to rmdir(). See rmdir(2) and unlink(2) for a detailed list of failure conditions. RETURN VALUES
Upon successful completion, remove() returns 0. Otherwise, it returns -1 and sets errno to indicate an error. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
rmdir(2), unlink(2), attributes(5), standards(5) SunOS 5.11 14 Aug 2002 remove(3C)